Crna
Crna or CRNA may refer to:
- Centre en route de la navigation aérienne, air traffic control centres across France
- Certified Registered Nurse Anesthetist, a medical qualification in the United States
- Črna na Koroškem, a municipality in Slovenia
- cRNA, RNA derived from cDNA through standard RNA synthesis
- Center for Resilient Networks and Applications, a research institution associated with Simula Research Laboratory